Cluster analysis of foraminifera
from a ~12,000-9,000 radiocarbon year old piston core from Goose Island
Trough, Queen Charlotte Sound, indicates that a cold interval correlative
with the Younger Dryas stadial occurred during a shallow water phase. Low
salinity-near glacial conditions between ~11,000 and 10,000 years BP were
recognized by abundant populations of Cassidulina reniforme and
Islandiella helenae. (Also by the decrease in Epistominella vitrea)
Weighted faunal distribution graphs were generated which highlight the
relative abundance of selected species ( here Cassidulina reniforme,Islandiellahelenae Epistominella vitrea are shown). The presence of these species
is critical to the recognition of cold depositional intervals within the
core.